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Turbo equalization : adaptive equalization and channel decoding jointly optimized

Abstract : This paper deals with a receiver scheme where adaptive equalization and channel decoding are jointly optimized in a iterative process. This receiver scheme is well suited for transmissions over a frequency-selective channel with large delay spread and for high spectral efficiency modulations. A low-complexity soft-input soft-output M-ary channel decoder is proposed. Turbo equalization allows intersymbol interference to be reduced drastically. For most time-invariant discrete channels, the turbo-equalizer performance is close to the coded Gaussian channel performance, even for low signal-to-noise ratios. Finally, results over time-varying frequency-selective channel proves the excellent behavior of the turbo equalizer.
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Submitted on : Friday, May 17, 2019 - 4:33:49 PM
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  • HAL Id : hal-02132901, version 1


Christophe Laot, Alain Glavieux, Joël Labat. Turbo equalization : adaptive equalization and channel decoding jointly optimized. IEEE Journal on Selected Areas in Communications, Institute of Electrical and Electronics Engineers, 2001, 19 (9), pp.1744 - 1752. ⟨hal-02132901⟩



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